Gerthoffer, Brett
Current rating: 1529
Record: 9-8
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 465 | Westfall, Craig (1500) | Lost 0-2 | -181464 |
| 2modern | 731 | Sponholz, Richard (1463) | Won 2-1 | +181482 |
| 3modern | 1021 | Selleny, Jon (1449) | Won 2-0 | +181500 |
| 4modern | 659 | Glass, John (1632) | Won 2-0 | +201520 |
| 5modern | 217 | O'Donnell, Devon (1863) | Lost 1-2 | -121508 |
| 6modern | 742 | Labuda, Lucas (1732) | Lost 1-2 | -141494 |
| 7modern | 695 | Ortz, Taylor (1500) | Won 2-1 | +181512 |
| 8modern | 478 | Pelchuck, Emmi (1468) | Won 2-1 | +171529 |
| average opponent: 1576record: 5-3 | new rating: 1529 | |||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 565 | Cunagin, Jacob (1500) | Lost 0-2 | -181482 |
| 2sealed | 640 | Clark, David J (1363) | Won 2-0 | +161498 |
| 3sealed | 480 | Hare, Ryan (1534) | Lost 1-2 | -171481 |
| 4sealed | 619 | Fournier, Anthony (1482) | Won 2-0 | +181499 |
| 5sealed | 604 | Anderson, Seth (1511) | Lost 0-2 | -181481 |
| 6sealed | 567 | Keller, Andrew (1485) | Won 2-0 | +181499 |
| 7sealed | 397 | Wagner, Jeffrey (1563) | Won 2-1 | +191518 |
| 8sealed | 287 | Schultz, Christopher (1502) | Lost 1-2 | -181500 |
| 9sealed | 249 | Siembor, Michael (1511) | Lost 1-2 | -181482 |
| average opponent: 1495record: 4-5 | new rating: 1482 | |||